diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2015-06-24 04:23:46 +0200 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2015-06-24 10:03:18 +0200 |
commit | e5067d7cd967cb17067de24a162306b79f432b20 (patch) | |
tree | 541f101762df32a5742bec354009986a96d8e564 /drivers/net/hamradio/soundmodem/smdma.h | |
parent | 86a981e836404006efc35881ebf3d5ae36925e82 (diff) |
Import newax25-2.4.3.patch.1.bz2HEADnewax25-2.4.3-1
And cleanup the *.orig and *.rej files and whitespace errors that are part
of the original patch.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/net/hamradio/soundmodem/smdma.h')
-rw-r--r-- | drivers/net/hamradio/soundmodem/smdma.h | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/drivers/net/hamradio/soundmodem/smdma.h b/drivers/net/hamradio/soundmodem/smdma.h deleted file mode 100644 index 44e457a7a..000000000 --- a/drivers/net/hamradio/soundmodem/smdma.h +++ /dev/null @@ -1,217 +0,0 @@ -/*****************************************************************************/ - -/* - * smdma.h -- soundcard radio modem driver dma buffer routines. - * - * Copyright (C) 1996 Thomas Sailer (sailer@ife.ee.ethz.ch) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Please note that the GPL allows you to use the driver, NOT the radio. - * In order to use the radio, you need a license from the communications - * authority of your country. - * - */ - -#ifndef _SMDMA_H -#define _SMDMA_H - -/* ---------------------------------------------------------------------- */ - -#include "sm.h" - -/* ---------------------------------------------------------------------- */ - -#define DMA_MODE_AUTOINIT 0x10 -#define NUM_FRAGMENTS 4 - -/* - * NOTE: make sure that hdlcdrv_hdlcbuffer contains enough space - * for the modulator to fill the whole DMA buffer without underrun - * at the highest possible baud rate, otherwise the TX state machine will - * not work correctly. That is (9k6 FSK): HDLCDRV_HDLCBUFFER > 6*NUM_FRAGMENTS - */ - -/* --------------------------------------------------------------------- */ -/* - * ===================== DMA buffer management =========================== - */ - -/* - * returns the number of samples per fragment - */ -extern __inline__ unsigned int dma_setup(struct sm_state *sm, int send, unsigned int dmanr) -{ - if (send) { - disable_dma(dmanr); - clear_dma_ff(dmanr); - set_dma_mode(dmanr, DMA_MODE_WRITE | DMA_MODE_AUTOINIT); - set_dma_addr(dmanr, virt_to_bus(sm->dma.obuf)); - set_dma_count(dmanr, sm->dma.ofragsz * NUM_FRAGMENTS); - enable_dma(dmanr); - if (sm->dma.o16bit) - return sm->dma.ofragsz/2; - return sm->dma.ofragsz; - } else { - disable_dma(dmanr); - clear_dma_ff(dmanr); - set_dma_mode(dmanr, DMA_MODE_READ | DMA_MODE_AUTOINIT); - set_dma_addr(dmanr, virt_to_bus(sm->dma.ibuf)); - set_dma_count(dmanr, sm->dma.ifragsz * NUM_FRAGMENTS); - enable_dma(dmanr); - if (sm->dma.i16bit) - return sm->dma.ifragsz/2; - return sm->dma.ifragsz; - } -} - -/* --------------------------------------------------------------------- */ - -extern __inline__ unsigned int dma_ptr(struct sm_state *sm, int send, unsigned int dmanr, - unsigned int *curfrag) -{ - unsigned int dmaptr, sz, frg, offs; - - dmaptr = get_dma_residue(dmanr); - if (send) { - sz = sm->dma.ofragsz * NUM_FRAGMENTS; - if (dmaptr == 0 || dmaptr > sz) - dmaptr = sz; - dmaptr--; - frg = dmaptr / sm->dma.ofragsz; - offs = (dmaptr % sm->dma.ofragsz) + 1; - *curfrag = NUM_FRAGMENTS - 1 - frg; -#ifdef SM_DEBUG - if (!sm->debug_vals.dma_residue || offs < sm->debug_vals.dma_residue) - sm->debug_vals.dma_residue = offs; -#endif /* SM_DEBUG */ - if (sm->dma.o16bit) - return offs/2; - return offs; - } else { - sz = sm->dma.ifragsz * NUM_FRAGMENTS; - if (dmaptr == 0 || dmaptr > sz) - dmaptr = sz; - dmaptr--; - frg = dmaptr / sm->dma.ifragsz; - offs = (dmaptr % sm->dma.ifragsz) + 1; - *curfrag = NUM_FRAGMENTS - 1 - frg; -#ifdef SM_DEBUG - if (!sm->debug_vals.dma_residue || offs < sm->debug_vals.dma_residue) - sm->debug_vals.dma_residue = offs; -#endif /* SM_DEBUG */ - if (sm->dma.i16bit) - return offs/2; - return offs; - } -} - -/* --------------------------------------------------------------------- */ - -extern __inline__ int dma_end_transmit(struct sm_state *sm, unsigned int curfrag) -{ - unsigned int diff = (NUM_FRAGMENTS + curfrag - sm->dma.ofragptr) % NUM_FRAGMENTS; - - sm->dma.ofragptr = curfrag; - if (sm->dma.ptt_cnt <= 0) { - sm->dma.ptt_cnt = 0; - return 0; - } - sm->dma.ptt_cnt -= diff; - if (sm->dma.ptt_cnt <= 0) { - sm->dma.ptt_cnt = 0; - return -1; - } - return 0; -} - -extern __inline__ void dma_transmit(struct sm_state *sm) -{ - void *p; - - while (sm->dma.ptt_cnt < NUM_FRAGMENTS && hdlcdrv_ptt(&sm->hdrv)) { - p = (unsigned char *)sm->dma.obuf + sm->dma.ofragsz * - ((sm->dma.ofragptr + sm->dma.ptt_cnt) % NUM_FRAGMENTS); - if (sm->dma.o16bit) { - time_exec(sm->debug_vals.mod_cyc, - sm->mode_tx->modulator_s16(sm, p, sm->dma.ofragsz/2)); - } else { - time_exec(sm->debug_vals.mod_cyc, - sm->mode_tx->modulator_u8(sm, p, sm->dma.ofragsz)); - } - sm->dma.ptt_cnt++; - } -} - -extern __inline__ void dma_init_transmit(struct sm_state *sm) -{ - sm->dma.ofragptr = 0; - sm->dma.ptt_cnt = 0; -} - -extern __inline__ void dma_start_transmit(struct sm_state *sm) -{ - sm->dma.ofragptr = 0; - if (sm->dma.o16bit) { - time_exec(sm->debug_vals.mod_cyc, - sm->mode_tx->modulator_s16(sm, sm->dma.obuf, sm->dma.ofragsz/2)); - } else { - time_exec(sm->debug_vals.mod_cyc, - sm->mode_tx->modulator_u8(sm, sm->dma.obuf, sm->dma.ofragsz)); - } - sm->dma.ptt_cnt = 1; -} - -extern __inline__ void dma_clear_transmit(struct sm_state *sm) -{ - sm->dma.ptt_cnt = 0; - memset(sm->dma.obuf, (sm->dma.o16bit) ? 0 : 0x80, sm->dma.ofragsz * NUM_FRAGMENTS); -} - -/* --------------------------------------------------------------------- */ - -extern __inline__ void dma_receive(struct sm_state *sm, unsigned int curfrag) -{ - void *p; - - while (sm->dma.ifragptr != curfrag) { - if (sm->dma.ifragptr) - p = (unsigned char *)sm->dma.ibuf + - sm->dma.ifragsz * sm->dma.ifragptr; - else { - p = (unsigned char *)sm->dma.ibuf + NUM_FRAGMENTS * sm->dma.ifragsz; - memcpy(p, sm->dma.ibuf, sm->dma.ifragsz); - } - if (sm->dma.o16bit) { - time_exec(sm->debug_vals.demod_cyc, - sm->mode_rx->demodulator_s16(sm, p, sm->dma.ifragsz/2)); - } else { - time_exec(sm->debug_vals.demod_cyc, - sm->mode_rx->demodulator_u8(sm, p, sm->dma.ifragsz)); - } - sm->dma.ifragptr = (sm->dma.ifragptr + 1) % NUM_FRAGMENTS; - } -} - -extern __inline__ void dma_init_receive(struct sm_state *sm) -{ - sm->dma.ifragptr = 0; -} - -/* --------------------------------------------------------------------- */ -#endif /* _SMDMA_H */ - - - |